Buick specific DTC OBD2 code: P1540 A/C System High Pressure
Buick specific DTC OBD2 code: P1504 Vehicle Speed Output Circuit
Buick specific DTC OBD2 code: P1525 Throttle Body Service Required
Buick specific DTC OBD2 code: P1541 A/C High Side Over Temperature
Buick specific DTC OBD2 code: P1508 IAC System Low RPM
Buick specific DTC OBD2 code: P1526 TP Sensor Learn Not Complete
Buick specific DTC OBD2 code: P1542 A/C System High Pressure High Temperature
Buick specific DTC OBD2 code: P1509 IAC System High RPM
Buick specific DTC OBD2 code: P1527 Transmission Range/Pressure Switch Comparison
Buick specific DTC OBD2 code: P1543 A/C System Performance